Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/101439
Title: Predator perception of detritus and eggsac decorations spun by orb-web spiders Cyclosa octotuberculata: Do they function to camouflage the spiders?
Authors: Gan, W.
Liu, F.
Zhang, Z.
Li, D. 
Keywords: Achromatic contrast
Camouflage
Chromatic contrast
Cyclosa octotuberculata
References
Spider
Web decorations
Issue Date: 2010
Citation: Gan, W.,Liu, F.,Zhang, Z.,Li, D. (2010). Predator perception of detritus and eggsac decorations spun by orb-web spiders Cyclosa octotuberculata: Do they function to camouflage the spiders?. Current Zoology 56 (3) : 379-387. ScholarBank@NUS Repository.
Abstract: Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or eggsacs to their webs called web decorations. Web decorations resembling spider body colour pattern have been considered to camouflage the spider from predators. While this camouflage is obvious from a human's perspective, it has rarely been investigated from a predator's perspective. In this study, we tested the visibility of web decorations by calculating chromatic and achromatic contrasts of detritus and eggsac decorations built by Cyclosa octotuberculata, against four different backgrounds viewed by both bird (e.g., blue tits) and hymenopteran (e.g. wasps) predators. We showed that both juvenile and adult spiders on webs with detritus or egg-sac decorations were undetectable by both hymenopteran and bird predators over short and long distances. Our results thus suggest that decorating webs with detritus or eggsacs by C. octotuberculata may camouflage the spiders from both hymenopteran and bird predators in their common habitats. © 2010 Current Zoology.
Source Title: Current Zoology
URI: http://scholarbank.nus.edu.sg/handle/10635/101439
ISSN: 00017302
Appears in Collections:Staff Publications

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